Combobox: caret in wrong position on IE11

[wkeese]

On Combobox-decl.html tab into the second combobox, then hit down arrow twice so that Germany is active. Then press backspace. Rather than erasing the "y" of "Germany" or all the characters, nothing gets cleared, because the caret is at the beginning of the line before the "G".

Similar issues in ComboPopup.html test although that doesn't matter too much since ComboPopup is only used in real life on mobile devices.